Liquidtight or Cantex flexible conduit for attic and crawlspace run?

[toddt429]

I need to run 6ga (4wires) thhn from main up to attic and across then down and into a crawlspace then out to a disconnect. I know pvc would probably be a little cheaper, but is it acceptable to use liquidtight or cantex non metalic flexible conduit for the entire run? if so, am I going to kick myself when it comes time to try and fish the wires through it. I will have 4 45 degree bends. According to the conduit fill chart, 3/4" will suffice, but would it be worth it for me to run the 1 inch for ease of getting the wires through? I have to do 4 seperate runs as I will be using 1 spool of wire instead of 4 individual spools. If anyone can offer advice and opinions, I would very much appreciate it. thanks in advance.
todd

 

[sparky 1971]

It's gonna be tough it's as far of a run as it sounds. And, going on the assumption that this is going to be a four wire 120/240 circuit, the neutral is supposed to be white or gray (marking tape isn't code compliant until the size gets to #4), I don't care, I've taped plenty of 8's and 6's, but you're going to get it inspected, the inspector might and the ground wire can be a #10 but it will have to be green.

 

[Norcal]

I need to run 6ga (4wires) thhn from main up to attic and across then down and into a crawlspace then out to a disconnect. I know pvc would probably be a little cheaper, but is it acceptable to use liquidtight or cantex non metalic flexible conduit for the entire run? if so, am I going to kick myself when it comes time to try and fish the wires through it. I will have 4 45 degree bends. According to the conduit fill chart, 3/4" will suffice, but would it be worth it for me to run the 1 inch for ease of getting the wires through? I have to do 4 seperate runs as I will be using 1 spool of wire instead of 4 individual spools. If anyone can offer advice and opinions, I would very much appreciate it. thanks in advance.
todd

If there is a neutral & grounding conductor in that mix, it will not be code compliant, as phase tape, or paint is not allowed for 6 AWG & smaller neutral & grounding conductors, the insulation must be white or green. Then there is the issue of grounding conductor size, pulling wire in NM liquidtight will be a *****.

 

[PCustoms]

4 pulls through flexible conduit?

No thanks.

You didn't say distance, but even pulling all 4 at once is going to ****.

Can you run SEU?

 

[toddt429]

It's gonna be tough it's as far of a run as it sounds. And, going on the assumption that this is going to be a four wire 120/240 circuit, the neutral is supposed to be white or gray (marking tape isn't code compliant until the size gets to #4), I don't care, I've taped plenty of 8's and 6's, but you're going to get it inspected, the inspector might and the ground wire can be a #10 but it will have to be green.

Thank you. I had a feeling it was more trouble than it's worth. I appreciate you addressing the non compliance issue as well. I had no Idea that that marking tape wasn't compliant. I've done it before as well, but due to the complexity of this job, I will be pulling permits. I'd rather not embarrass myself to an inspector. Your response was really helpfull and I appreciate it. Thanks.
Todd

 

[toddt429]

If there is a neutral & grounding conductor in that mix, it will not be code compliant, as phase tape, or paint is not allowed for 6 AWG & smaller neutral & grounding conductors, the insulation must be white or green. Then there is the issue of grounding conductor size, pulling wire in NM liquidtight will be a *****.

Yup. Thank you for catching that for me, I was unaware.

 

[toddt429]

4 pulls through flexible conduit?

No thanks.

You didn't say distance, but even pulling all 4 at once is going to ****.

Can you run SEU?

 

[toddt429]

.

 

[toddt429]

No, I can't use service wire going into the disconnect and I want it to be a home run to the disconnect with no junction or transition. Thank you for helping me make up my mind. I'll stick with pvc conduit.

 

[toddt429]

I need to run 6ga (4wires) thhn from main up to attic and across then down and into a crawlspace then out to a disconnect. I know pvc would probably be a little cheaper, but is it acceptable to use liquidtight or cantex non metalic flexible conduit for the entire run? if so, am I going to kick myself when it comes time to try and fish the wires through it. I will have 4 45 degree bends. According to the conduit fill chart, 3/4" will suffice, but would it be worth it for me to run the 1 inch for ease of getting the wires through? I have to do 4 seperate runs as I will be using 1 spool of wire instead of 4 individual spools. If anyone can offer advice and opinions, I would very much appreciate it. thanks in advance.
todd

Thank You all for the help and catching the non compliance issue.

 

[mm08822]

So why is it that you can't run SEC?

IF SEC is exposed to damage at the disconnect, then sleave it in conduit at that location only.

 

[PCustoms]

SEC?

Securities and Exchange Commission?

 

[toddt429]

So why is it that you can't run SEC?

IF SEC is exposed to damage at the disconnect, then sleave it in conduit at that location only.

The way I interpreted article 680, it has to be thwn in conduit and I've been reading the histories on other forums and seems that is the common answer. I suppose you now know what the disconnect is for lol. I was reluctant to disclose that.

 

[mm08822]

Securities and Exchange Commission?

Service entrance cable......ser in this case.

 

[PCustoms]

Service entrance cable......ser in this case.

Never heard it abbreviated that way.

SEU or SER

 

[pattenp]

I'm don't know why SER won't work in your case? What section of 680 are you referring to? Look at 680-25 Feeders (A) (1) Exception for approved cable assembly with insulated equipment ground.

 

[toddt429]

I'm don't know why SER won't work in your case? What section of 680 are you referring to? Look at 680-25 Feeders (A) (1) Exception for approved cable assembly with insulated equipment ground.

 

[toddt429]

I am having a hard time seeing why I can't use it now that I read through it. I think I'm going to stop into the inspectors office and ask exactly what they expect and prefer. I also have to run a dedicated 110 convenience outlet out there. In which case, the conduit would probably be easier. It is a 70+ foot run up into attic and across then down I to crawlspace. Thank you for poi ting this out. I won't rule it out just yet.